Articles

Running a rubber mill until it fails is a maintenance strategy, whether or not anyone has ever called it that. Plenty of operations run this way, not by choice but because production demand never lets up and there is never a convenient time to take a machine down. The mill runs, it makes product, and…

The platen is where the press meets the process. Everything the press is built to do, including tonnage, stroke, and cycle control, is delivered to the part through the platen surface, and in heated molding applications the platen is also responsible for putting heat into the material at the right temperature and holding it evenly…

Two rolls rotating at different speeds repeatedly work the rubber compound through a controlled gap until it reaches the desired consistency, temperature, and dispersion  The basic mechanics of a rubber mill have not changed much over the decades, but understanding what is happening in the nip, and why those variables matter, is what separates a…

Not every rubber molding application requires vacuum, but for the applications where it does matter, the difference in part quality and process consistency can be significant.  Vacuum molding presses are designed to evacuate air from the mold cavity before and during the molding process. In standard compression molding, air trapped in the mold or within the compound…

A rubber mixer rebuild is not simply a matter of replacing worn parts. The mixer body, rotors, drop door, floating weight, bearing arrangements, seals, and drive components all interact as part of a system, and the condition of each affects how the others perform after the machine is returned to service.  Many mixers that reach the end…

A rubber mill can run for decades without major upgrades, but the way it is controlled, adjusted, and supported has a significant impact on how efficiently and safely it operates day to day. Many mills currently in production were built around manual controls and basic mechanical configurations that made sense at the time. As production…

A failing rubber mill bearing does not just halt production; it can lead to severe damage to roll journals, housings, and drive components. This guide breaks down the mechanical differences, common failure modes, and practical considerations behind bronze journal…

A rubber mill does not usually fail all at once. More often, the warning signs build over time. You start seeing worn journals, damaged gears, bearing issues, uneven roll condition, or performance that just is not what it used to be. At that point, many shops ask the same question: should we replace the mill,…